Abstract—Internet customers may have strict resilience requirements for specific periods of times. However, these time-differentiated resilience requirements are not effectively addressed by current SLA frameworks. To satisfy the resilience-sensitive periods, a generic SLA framework typically provides upgraded protection over the entire service duration, which is unnecessary and expensive. In this study, we propose a novel SLA framework, which allows customers to specify Critical Windows (CW) to address time-differentiated resilience demands. CWs correspond to the periods that require extra protection, and are backed up using path-level pre-cross-connected protection. Considering the complementary profiles of CWs, we identify the opportunity for backup resource sharing in the time domain. To exploit backup sharing, a heuristic scheme is proposed (Globally-CW-Aware connection assignment) to reduce backup resources. Our study shows that, using the proposed SLA framework: 1) low operational complexity can be achieved; 2) backup resources can be significantly reduced; and 3) high resilience (Service Level) can be achieved for CWs.

A Novel SLA for Time-DifferentiatedResilience with Efficient Resource Sharing in WDM Networks

TORNATORE, MASSIMO;
2010-01-01

Abstract

Abstract—Internet customers may have strict resilience requirements for specific periods of times. However, these time-differentiated resilience requirements are not effectively addressed by current SLA frameworks. To satisfy the resilience-sensitive periods, a generic SLA framework typically provides upgraded protection over the entire service duration, which is unnecessary and expensive. In this study, we propose a novel SLA framework, which allows customers to specify Critical Windows (CW) to address time-differentiated resilience demands. CWs correspond to the periods that require extra protection, and are backed up using path-level pre-cross-connected protection. Considering the complementary profiles of CWs, we identify the opportunity for backup resource sharing in the time domain. To exploit backup sharing, a heuristic scheme is proposed (Globally-CW-Aware connection assignment) to reduce backup resources. Our study shows that, using the proposed SLA framework: 1) low operational complexity can be achieved; 2) backup resources can be significantly reduced; and 3) high resilience (Service Level) can be achieved for CWs.
2010
Proceedings of ICC
9781424464029
TEL
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/565593
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